MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 39,454 1,529,593
INS90 13,442 116,320
INS85 11,199 58,122
INS80 10,254 41,617
INS69 10,526 61,571
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,638 29,113
2-4 a.m. 615 19,266
4-6 a.m. 421 18,642
6-8 a.m. 768 20,195
8-10 a.m. 5,286 103,169
10-12 a.m. 15,025 307,820
12-2 p.m. 13,994 291,786
2-4 p.m. 18,590 372,062
4-6 p.m. 15,532 352,920
6-8 p.m. 6,289 150,256
8-10 p.m. 3,510 80,873
10-12 p.m. 3,207 61,121
__________ _____________ _________________
Total: 84,875 1,807,223
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 195
Davis 268
Irvine 237
Los Angeles 1,513
Riverside 18
San Diego 366
San Francisco 145
Santa Barbara 360
Santa Cruz 163
Lawrence Berkeley 125
Lawrence Livermore 82
Los Alamos 0
MELWEB 49
Searchlight 7,465
Other - UC 73,549
Other-Network UC 340
_____
84,875
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,795
Davis 1,307
Irvine 4,371
Los Angeles 2,926
Riverside 134
San Diego 4,114
San Francisco 501
Santa Barbara 4,179
Santa Cruz 1,253
Lawrence Berkeley 2,942
Lawrence Livermore 14,682
Los Alamos 0
MELWEB 11
Searchlight 0
Other - UC 1,766,184
Other-Network UC 2,824
_____
1,807,223
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.3
Standard deviation in seconds 6.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:38
Average session length (minutes:seconds) 20:47
Longest session recorded (minutes:seconds) 262:01
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 371.1
Retrievals per search - standard deviation 7931.4
Percent of searches completed with 0 results 33.6%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 84,875 18.5%
PRESENT 332,514 72.3%
INIT or CLOSE 41,802 9.1%
OTHER 476 0.1%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 33,121 30.9% 11,073 33.4% 9 68.4 663.9
TITLE WORD 18,491 17.2% 8,046 43.5% 3 83.3 1691.7
EXACT TITLE 1,103 1.0% 622 56.4% 1 13.8 109.2
JOURNAL 4,207 3.9% 2,101 49.9% 8 1867.6 14285.9
EXACT JOURNAL 1,173 1.1% 517 44.1% 333 3487.4 9720.3
SUBJECT 3,854 3.6% 1,997 51.8% 9 203.4 955.5
EXACT SUBJECT 500 0.5% 151 30.2% 5 157.4 725.2
THESAURUS 3 0.0% 2 66.7% 4 4.0 0.0
EXACT THESAURUS 112 0.1% 17 15.2% 14 358.0 656.6
KEYWORD 35,665 33.2% 11,668 32.7% 14 940.9 14122.1
SUBFILE 80 0.1% 24 30.0% 29 80.3 113.1
FORM 811 0.8% 250 30.8% 21 120.7 564.1
DATE 970 0.9% 398 41.0% 7 184.1 2700.4
ADDED 365 0.3% 248 67.9% 4 10.9 19.6
ARTICLE 60 0.1% 13 21.7% 13 103.9 350.7
AUTHOR AFFIL. 1,105 1.0% 451 40.8% 12 90.8 477.5
CONFERENCE 191 0.2% 85 44.5% 23 190.0 543.6
LANGUAGE 2,465 2.3% 624 25.3% 20 403.0 2014.9
CHEMICAL NAME 560 0.5% 296 52.9% 10 68.0 243.1
ISSN 6 0.0% 4 66.7% 1 1.0 0.0
ISBN 22 0.0% 19 86.4% 27 59.7 68.1
ID NUMBER 3 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 108 0.1% 77 71.3% 1 1.7 1.1
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,344 2.2% 826 35.2% 11 425.2 2627.8
Other indexes 28 0.0% 21 75.0% 4 881.3 1486.4
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 18,476 21.8% 8,603 46.6% 5 154.5 1509.7
Single 66,399 78.2% 19,940 30.0% 12 645.2 10689.8
PRESENT commands, by type:
MARC 39.5%
OPAC 33.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)